Mechanical refrigeration



June 5, 1928. 1,672,833

0. c. SPREEN MECHANICAL REFRIGERATION Filed Jan. 29, 1927 FIG. 1

PrczZ I CHAQLE$ C. SPmN .INVENTOQ ATTORNEYS Patented June 5,1928.

- UNITED STATES PATENT OFFICE.

CHARLES C. SPREEN, OF DETROIT, MICHIGAN, ASSIGNOR 'IO ELECTRIC REFRIGERA- 'IION CORPORATION, OI DETROIT, MICHIGAN. A CORPORATION OF MICHIGAN.

MECHANICAL REFRIGERATION.

Application filed January 28, 1987. Serial No. 164,424.

My invention relates to mechanical refrigeration, and particularly to refrigerant expansion units for mechanical refrigerating apparatus, and the principal ob ect of 5 my invention is to provide new and 1mproved refrigerant expansion units of th s type. In. the drawings accompan mg this s ification and forming a part this ap- 'cation I have shown, for purposes of illhstration, two forms which my inventlon ma assume, and in the drawings:

igure 1 is a front elevation of one embodiment of my invention,

Figure 2 is a section on the line 2-2 of Fi ure 1,

igure 3 is a section on the line 33 of Fi 1, while igure 4 is a fragmentary view similar to Fi re 2 showing a variant form.

he embodiment of my invention herein shown comprises a refrigerator cabinet 11 having a refrigerating compartment 12 in which is supported my improved expansion unit 13 comprising a tank bod formed of two substantially semi-cylin rical sheet metal plates 14 and 15, having reinforcing ribs 16, having relatively broad flan s 1 and 18 about a. rtion of their perip cries, and so shaped t at when the flanges 17 and I0 18 are placed in contact and secured together by brazing, welding, or other suitable means there is formed a rece tacle 25 having one open end and a relative y broad flange seam 19 extendin outwardly therefrom except at the open and The unit 13 is completed by a closure 20 which carries the float valve mechanism 21 and is secured in the open end of the receptacle 25 b any suitable means, such as brazing or sol ering. The flange 19 is provided with apertures 22 adapted to be engaged by bolts 23 depending from the top wall 24 of the compartment 12 for supporti the unit within such compartment.

In the variation shown in Fi re 4 the tank 30 comprisessemi-c lindrica plates 26 and 27 provided with reatively narrow interlocking flanges forming a relatively narrow seam 28, and is designed for use in a cabinet having supporting means diflerent from that shown in Figure 1, for example a cradle 29 extending below the tank 30.

From the above disclosure it will be obvious to those skilled in the art that I have provided new and improved refrigerant expansion units for mechanical refrigerating apparatus.

At the same time it will be obvious to those skilled in the art that the embodiment of my invention herein shown and described may be variously chan d and modified without departing from t e spirit of my invention or sacrificin the advantages thereof, and it therefore wi 1 be understood that the disclosure herein is illustrative only, and that my invention is not limited thereto.

I claim:

1. In a mechanical refrigerati system,

a refrigerant ex ander unit including a container for re rigerant comprising two cupped sheet metal lates having their peripheral edges joined throughout part of their extent to form an open end receptacle, and a member joinin said cupped sheets over the remainder 0 their peripheries to form a closure for said open end of said receptacle.

2. In a mechanical refrigerating system, a refrigerant expander unit including a float valve tank! comprisin two cu ped sheet metal plates having t eir periplieral edges joined throughout part of their extent to form an open end oat valve receptacle, a member joining said cupped sheets over the remainder of their peripheries to form a closure for said open end receptacle, and shut-ofi valve means for said tank mounted on said member.

3. In a mechanical refrigerating system, a refrigerant expander unit including a container for refrigerant comprising two cupped sheet metal plates having their .peripheral edges joined directly together part of their extent to form a rethrou hout ceptac e having one o n end, and means for closin said open en 4. 1% a mechanical refrigerating system, a refrigerant expander unit including a container for refrigerant comprising two cupped sheet metal plates having pressed in reinforcing ribs, (jlomed at their peripheral edges, an aflor ing a chamber therebetween, to thus form said container.

5. In a mechanical refrigerating system, tainer for at least part of their extent, said a refrigerant expander unit including a conoutwardly extended ed s being provided tainer for refrigerant comprising two sheet with apertures for association with support- 10 metal plates joined at their ripheral edges in means. I 5 and afiordin a chamber t erebetween, to gn testimony whereof I hereunto afix my thus form said container, and having said signature. edges extended outwardly from said 0011- CHARLES C. SPREEN. 

